Mana Vault doesn't untap during your next untap step.
At the beginning of your upkeep, you may pay 4. If you do, untap Mana Vault.
At the beginning of your draw step, if Mana Vault is tapped, it deals 1 damage to you.
T: Add CCC.
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Rarity:M
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#:229
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Card Type:Artifact
